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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'bfb40f44c3cca623ca892e6449a8afb08ac338883108d8bddf44701851d8cf11' 
  AND token = 'Dl1aWmE1CJ2gbeLpWgQCoIIbNvIESPX7Yr1D9yQtnA4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}